Gas stove and burner lighting device.



L. A. MARSH.

GAS STOVE AND BURN GHTING DEVICE.

. APPLICATION FILE .26. 1915.

1 1955, Patented Jan. 25, 1916.

INVENTOR .Zzzcz'ew awm/z A'rroRsEY WITNESSES -I/ A z are LUCIEN AUGUSTUSMARSH, OF SAN FRANCISCO, CALIFORNIA.

GAS STOVE AND BURNER LIGHTING DEVICE.

Specification of Letters Patent.

Patented J an. 25, 1916.

Application filed April 26, 1915. Serial No. 23,957.

To all whom it may concern Be it known that I, LUCIEN A. MARSH, acitizen of the United States, residing at the city and county of SanFrancisco and State of California, have invented new and usefulImprovements in Gas Stove and Burner Lighting Devices, of which thefollowing 1s a specification.

My invention relates to improvements in devices for igniting gas atburners such as are employed for gas stoves and plates.

It consists in a novel combination of parts, and connections with thesupply gas conducting main, and with the burners, so that either or allof the burners may be lighted automatically and without any escape ofunburned gas and the supply of 'gas to any burner may be regulated asrequired.

It also comprises details of construction, all of which will be morefully .explained by reference'to the accompanying drawings, in which-Figure 1 is a plan of the main burners and the pilot light and theirconnections. Fig. 2 is an enlarged view of a single main controllingcock.

As shown in the drawings, AA are the main burners of a gas stove orplate disposed at the angles of an imaginary rectangle, and havingconducting pipes 2 leading from a gas main 3 which is fixed in suitableand convenient relation to the burners.

7 is a pilot light located substantially upon the level of the mainburners and equidistant therefrom and having a gas conducting pipe 6 tosupply a small torch flame within the pilot head. The jet openings ofthis pilot light are in alinement, one with each of the main burners.

The supply of gas is controlled by a cock 4, between the supply main andeach of the conductors 2. Small pipes 5 lead from each of the cocks t tothe pilot supply 6 so that gas may be first supplied to the pilot fromeither of the cocks, and jets of flame projected to the main burners,after which the gas supply to the burner or burners to be lighted willreceive gas which will be instantly ignited and all escape of unconsumedgas with its resultant odor will be prevented which is an importantfeature of my invention.

The cocks by which each gas inlet is controlled consists of a turnableplug 4: having a direct passage through it. This plug fits the shell orbody 4 which has a corresponding passage 4 to admit gas from the main 3to the burner connecting pipes 2. At one side of the shell 4 is a smallpassage 5 which connects through a small lead pipe 5 with the pipe 6 andthrough it with the pilot light head 7 within which a small torch flameis supplied from a cock controlled extension 6 opening into the main 3.The movement of the plug is limited by a stop pin contacting withshoulders on the casing shell to hold the plug in position in eitherdirection. The operation will then be as follows: When the plug isturned from its normally closed position, the passage through it firstopens communication between the gas main and the pilot light supply,thus causing jets of flame to be shot out directly against the mainburner heads, and a further turning of the plug connects the gas supplywith the main burner, while the cock is being turned, thus supplying gasthereto, and as this gas meets the jet from the pilot light it will beimmediately ignited without allowing any escape of unconsumed gas atthis point. Any one or all of the burners 'may thus be placed in actionindependently.

It will be seen from this construction that by turning the cock plug,the supply of gas to the main burner may be regulated after beingopened, without regard to the pilot light supply, after ignition of themain burner has taken place.

The pilot light supply pipes 5 may be connected with a closed chamber 8at the baseof the pipe 6, or they may extend up through this pipeindependently and connect with the jets in the head of the burner of thepilot light.

The advantage of the above described construction is that instead ofdischarging a jet of gas from the main burners to cross an open space tomeet the pilot light at its head, a jet of flame is discharged from thepilot head an instant before gas reaches the main burner, and when thegas does reach the main burner, it is instantly ignited with no escapeof unconsumed gas which must take place when the gas is dischargedacross the interval between the main burner and the pilot before it canbe ignited.

It will be seen that when the preliminary jet supply to the pilot lightis carried up through the pipe 6 and discharged directly toward the mainburner to be used, only a single jet will be used, and each succeedingburner will thus be independently ignited by its own individualconnecting jet, but when gas is supplied to the base of the pipe 6 fromeither of the cocks, all the pilot jets will discharge at the same time,and either or all of the main burners may be ignited.

Having thus described my invention, what and discharge a jet of flameagainst the main burner heads and upon further turning thereof tosubsequently deliver gas to the main burner heads to be ignited at saidheads Without discharge of unburned gas.

2. In a gas burner igniting device of the character described, mainburner heads, a pilot light burner head with jet openings in alinementwith the main burners, a small constant gas supply pipe to the pilothead, pipes connecting the main heads with a source of supply, otherindependent pipes connecting with the pilot head, and coacting means tofirst deliver gas to the pilot burner jets and subsequently to the mainburners.

3. In a gas burner igniting device, main burners, a source of supply,and independent pipes from the supply to the burners, a centrallylocated pilot pipe having an independent valve-controlled connectionfrom the supply, small pipes within the pilot pipe with nozzles directedtoward each of the main burners and connected with the controlling cocksof the main burners diagonally between the direct main burner supplyopenings, and controlling plugs'by which gas is first delivered throughthe igniting nozzles of the pilot head and subsequently to the mainburners upon further movement of said plugs.

4. A gas burner igniting device including main burners, apilot lighthead, and unitary means associated with each main burner to firstdischarge ignited jets through the pilot head against the main burnersupon initial movement of said means, and subsequently upon furthermovement of said means to supply gas to the main burner and cut oil theignition supply.

5. The combination in a gas burner igniting device, of main burners, asupply manifold, pipes leading from the manifold to said main burnersand having casings with main passages,'a pilot torch intermediate of themain burners having an independently controlled gas supply pipe, pipesextending through said pilot pipe, with nozzles ,directed toward themain burners, and having their opposite ends connected with therespective main cock casings between the main passages thereof, andplugs turnable in said casings to first deliver gas to the nozzles to beignited by the pilot torch and by further turning to open the passagesto the main burners.

6. In combination with a series of burners, and a source of supply, apilot, a valve for each burner, and connections leading from therespective valvesto the pilot for supplying jets to the burners, saidvalves being formed so that upon initial turning thereof the jet willfirst be supplied to the pilot and upon further turning thereof the gaswill be supplied to the burner and the jet cut off. In testimony whereofI have hereunto set my hand in the presence of two subscribingwitnesses.

LUCIEN AUGUSTUS MARSH.

Witnesses:

G. S. MARSH, BURNHAM W. MARSH.

